Lockable slide bolt assembly for doors and the like



March 17, 1953 swo 2,631,877

LOCKABLE SLIDE BOLT ASSEMBLY FOR DOORS AND THE LIKE Filed July 28, 1950IN VEN TOR.

Patented Mar. 17, 1953 LOCKABLE SLIDE BOLT ASSEMBLY FOR DOORS AND THELIKE Mark Ainsworth, Kansas City, Mo.

Application July 28, 1950, Serial No. 176,495

1 Claim. 1

This invention has to do with closure structures, such as doors, windowsand the like, and more particularly to a sliding bolt locking deviceadapted to be mounted on said structure.

The most important object of this invention is to present a sliding boltstructure that cannot be moved from the locking position without propermanipulation of the bolt and, also, to present means to prevent slidingof the bolt by one wishing to obtain an illegal entry.

Another important object of this invention is to present a sliding boltstructure that is economical to manufacture, light in weight and easilyadapted to various closures.

Other important objects of this invention reside in the novel structurethereof which will become apparent during the course of the followingspecification, referring to the accompanying drawing, wherein:

Figure 1 is a perspective view of a lockable slide bolt assembly fordoors and the like made according to one form of my present invention.

Fig. 2 is a cross-sectional view taken on line IIII of Fig. 1.

Fig. 3 is a perspective View showing a modified form of bolt for saidassembly.

Fig. 4 is a view similar to Fig. 3, another modified form of bolt.

Fig. 5 is a plan view of the assembly mounted on a door and its jamb,showing a modified form of bolt keeper.

Fig. 6 is an enlarged, perspective View of the keeper shown in Fig. 5.

Fig. 7 is a view similar to Fig. 5, showing still another form of a boltkeeper; and

Fig. 8 is a perspective view showing a portion of the keeper of Fig. 7.

The form of the invention illustrated in Figs. 1 and 2 includes asliding bolt structure broadly designated by the numeral I and mountedon a door I2 and a door jamb I4 respectively. A U- shaped frame I6 isrigidly affixed to the door I2 by a pair of wood screws I8 and 20. Thelegs 22 and 24 of the frame I6 have a pair of circular openings 26 and28 respectively, adapted to slidably and rotatably receive anelongated-bolt 30 that is semi-circular in cross-section. The leg 24 hasa slot 32 communicating with the opening 28 and with a second circularopening 34 adapted to receive the yoke or looped part of a padlock orlike device (not shown) to prevent removal of the bolt 30, as willhereinafter be more fully explained. The leg 22 of frame I6 is slightlyshorter than the leg 24 and both are arcuate on their free showing ends36 and 38 respectively, as is clearly shown 2 in Figs. 1 to 4 inclusive,to prevent the snagging of clothing or the like and, also, to offer apleasing appearance.

The bolt 30 has a pair of rectangular, spacedapart integral stop members40 and 42 extending radially from one longitudinal edge thereof, theformer carrying a bolt Or other removable stop element 44.

In one end 43 of the bolt 30 adjacent the leg 25, is an opening 50,adapted, as is the opening 34, to receive the looped portion of apadlock to prevent reciprocation of the bolt 30 and a handle member 52,similar in all respects to the stops 46] and 42, is disposed at theopposite end of the bolt 30.

End 48 of bolt 30 passes through an opening 54 in an elongated,rectangular keeper 56 mounted in a groove in the face of jamb I4adjoining the door and having an arcuate free end 58 similar to the ends36 and 38 of the frame legs 22 and 24 respectively. Communicating withthe opening 54 is a notch 50 identical to a notch 62 of the leg 22. Thenotch 60 of the keeper 56 is located approximately degrees from thenotch 62 of the leg 22 and the keeper 56 is releasably secured to thedoor jamb I4 by a number of wood screws 64 as is clearly shown inFig. 1. p

The operation of the slide bolt is simple and very efiective. The bolt30 is first moved into the frame I6 through the openings 28 and 26, withthe stops 40 and 42 passing through slot 32 and opening 34, and the bolt44 is then aflixed to the stop 40 to prevent complete withdrawal of thebolt 30 from the frame I6. To look the door I2, the bolt so is movedthrough the opening 54 of the keeper 56 and then turned in either aclockwise or counterclock-wise direction. In doing so, the stops 40 and42 are moved out of register with the slot 32 and the openings 34. I

As Fig. 1 clearly shows, the structure above described is in a lockedposition. The openings 34 or 50 are adapted to receive the loopedportion of a padlock to prevent withdrawal of the bolt from the lockedor unlocked position and, therefore, makes the sliding bolt structurepickproof or burglar-proof.

Fig. 3 shows a modified form of sliding and ro- .tatable bolt I00, butthe frame I6 is identical to the one shown in Figs. 1 and 2, andtherefore, need not be described again. The bolt I00 has three stops anda handle I02, I04, I05 and I08, respectively, integral therewith,substantially the same as previously described with the exception thatthe stops I02 and I04 are substantially onehalf as large as the stopI06, and the handle I08.

3 The stop I04 is bent approximately at a right angle to radial stopsI02 and H16 and the bolt I has an opening 1 I0 formed in one end thereofsimilar to the opening 50 of the bolt 30.

The operation of this modified bolt structure is similar to that firstdescribed with one exception. To completely withdraw the bolt 19 fromthe frame It, an additional turn of the bolt I00 must be made in orderfor the stop I 64 to pass through the slot 32 and the opening 34 of theframe I6. Removal and replacement of the bolt 44, which has beeneliminated in the form of Fig. 3, becomes unneoessary, Fig, 3 shows thebolt H16 in the unlocked position.

Fig. 4 shows a still further modified form of a sliding and rotatablebolt 2&0 with the identical frame 16 illustrated in Figs. 1 to 3inclusive. The bolt 266 has three spaced-apart stops and a handle 232,264, 296 and 258 respectively, the stops 264 and 206 being spaced aconsiderable distance apart, as is clearly illustrated. The stop 282 isadjacent an opening 2 i near one endof the bolt 26B, and the stop 264 isspaced substantially midway between the legs 22 and 24 of the frame l6when the bolt 2.68 is in the unlocked position, as shown in Fig. andwhen the stop 266 is on the outermost side of the leg E i.

The operation or" the bolt 26! is similar .tothose previously describedwith the additional factor that the stop 262 passes through the n tches66 and 62 of the keeper 56 and the leg 22 respectively, which againrequires an additional manipulation of the bolt 2% to obtain completewithdrawal and unlocking of a door or window E2 .to which it isattached, as the case may be. it is noted that the stops 266 andZBBembrace the leg 24 and the stop 2 2 is disposed on the outermost faceof keeper 56 when the bolt 289 is locked, cooperating in preventingaccidental unlocking. To remove thebolt 286 from the frame [6, the belt266 must be rotated to align the stop 262 with the slot -68 after thebolt 2% is shifted to move the stop 266 through the opening 3% and theslot 32.

- forward of a slight bend 363 are a pair of .bolt- Either of the bolts36 or receiving openings 3i 6. 163 will slide into either of theopenings tlfiand may be locked therewith, if so desired. The bracket-304has a pair of openings 312 adapted to receive screws as shown in Fig. 5,to attach the keeper-'35s to the closure jamb i i.

In operation, thekeeper we may he utilizedin substantially the same wayas the keeper 56 and in connection therewith if desired. The keeper 306is designed to hold the closure 12 ajar in order to permit circulationof air throughout a room and when the keeper-3E5} is not being used, itcan be raised or lowered out of position, there being enough clearancebetween the leg 3% and the heads of the screws 3 Hi to permit suchswinging movement.

Figs. 7 and 8 illustrate a third form of keeper 460 which is adapted tobe affixed to jamb M. The frame It and any one of the sliding androtatable bolts 36, IE0 or 200 may be used with keeper 406. The keeper460 consists of a U- shaped member 402 which may be attached to the lambM by any suitable means, such as by wood screws 406.

Member 402 has a pair of openings not shown, adapted to receive an eyebolt 463 on which is threaded a nut 416, as shown in Fig. 7. Secured tothe eye bolt 408 is a chain M2 that in turn joins with an elongatedmember 4M through an opening N6 of the latter. Member AM of keeper 406'is complemental with and of a lesser diameter than that of the threepreviously-described bolts. Depending from one link 418 of chain M2 is ahook 426.

In operation, the member M4 is slid through the bolt of the frame it andthe corresponding frameopenings and is heldin'place thereby. The hook426 can be placed in any one of the links of the chain M2 to shorten orlengthen the latter, with .the result that the deer 12 may be opened agreater or lesser amount. Also, the door {2 may be completely closedwithout removing the member M4 from the bolt and the frame.

Having thus described the invention, whatis claimed as new and desiredto be secured by Letters Patent is:

In latch structure, a U-shaped frame having a pair of spaced, parallellegs, each having anopening therein, onset the legs being provided witha slot registering with the opening thereof janelongated bolt rotatablymounted in the opening for reciprocable movement on its longitudinalaxis; and a pluralityof laterally extending, co-planar, stop members onthe bolt, one of the stop members being adjacent one end of the bolt,presenting a handle, a second and a third stop member beingdisposedbetweenthe handle and the opposite end of the bolt, and between the saidlegs when the bolt is at one end of its path of travel, said stopmembers all being movable through the slot upon rotation of theboltrelativeto the frame to align the stops with the slot, said stop membersbeing spaced for receiving the one leg therebetween when the bolt isrotated to move the stop members 'out of alignment with said slot, saidsecondstop member being disposedbetween said one stop member and thethird stop member, and

the third stop member being provide'diwith' releasable means for holdingthe same against movement through theslot.

MARK AINSWORTH.

REFERENCES CITED The following references are of record in the .file ofthis patent:

UNITED STATES PATENTS

